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Clinical Manifestations and MRI Findings of Patients with Hydrated and Dehydrated Lumbar Disk Herniation

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Author(s): A.R. Rasekhi | A.R Babaahmadi | R. Assadsangabi | A. Nabavizadeh

Journal: Iranian Journal of Radiology
ISSN 1735-1065

Volume: 4;
Issue: S1;
Start page: 1;
Date: 2007;
Original page

ABSTRACT
Background and Objective: In addition to the ex-pected appearance of degenerated disks which be-come dehydrated, hydrated intervertebral disk herni-ations are sometimes encountered in radiologic prac-tice. This study was undertaken to evaluate the clini-cal manifestations and MRI findings of hydrated and dehydrated herniated intervertebral disks. Materials and Methods: This cross-sectional single institution study included 73 patients with dehy-drated (group I) and hydrated (group II) lumbar disk herniation. The criteria for hydrated and dehydrated disk herniation was a subjective criteria compared to the normal signal of intervertebral disks. A herniated disk has been regarded to be hydrated if more than 2/3 of it was hypersignal in T2-weighted images, while more than 2/3 of a dehydrated disk was hy-posignal on T2-weighted images. Results: Mean weight of patients in group I was greater than patients in group II (69.3 vs. 64.2, P
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